Nailing-machine.



A. 1); ELLIOTT.

NAILING MACHINE.

APPLICATION FILED MAR. 13, 1902. RENEWED MAR. 27, 1912.

Patented June 25, 1912.

4 SHEETS-SHEET 1.

Jar/3% v 4 aya COLUMBIA PLANOURAPH cc. WASHINGTON. D. c.

A. 1). ELLIOTT.

NAILING moms.

APPLICATION FILED MAR. 13, 1902. RENEWED MAB 27, 1912. 1,030,654,Patented June 25, 1912.

4 SHEETS-SHEET 2.

COLUMBIA PLQNOBRAPH c0., WASHINGTON, D. c.

A. D. ELLIOTT.

NAILING MACHINE.

. APPLICATION FILED Mums, 1902. RENEWED MAR. 27. 1912. 1,030,654.

Patented June 25, 19,12,

4 sums-sun s.

COLUMBIA PLANOGRAPII c0..wAs|nNGTON. u c.

A. D. ELLIOTT.

NAILING MACHINE.

APPLICATION FILED MAR. 13, 1902. RENEWED MAR. 27, 1912. 1,030 654Patented June 25, 1912.

4 SHEETS-SHEET 4.

COLUMBIA PLANOORAPH C0..\VASHINGTON, I:v c.

AES PA ALVIN D. ELLIOTT, OF LAWRENCE, MASSACHUSETTS, ASSIG-NOR TO UNITEDSHOE MACHINERY COMPANY, OF PATERSON, NEW JERSEY, A CORPORATION OF NEWJERSEY.

NAILING-MAoHINE.

Patented June 25, 1912.

Application filed March 13, 1902, Serial No. 98,071. Renewed March 27,1912. Serial No. 686,622.

To all whom, it may concern:

Be it known that I, ALVIN D. ELLIOTT, a citizen of the United States,residing at Lawrence, county of Essex, State of Massachusetts, haveinvented an Improvement'in Nailing-h/Iachines, of which the followingdescription, in connection with the accompanying drawings, is aspecification, like letters on the drawings representing like parts.

This invention relates to heel attaching machines and is shown embodiedin a machine for attaching heels to shoes and for thereafter securingtop lifts to the attached heels.

The invention contemplates more particularly the improvement of heelattaching machines of the type in which there is pro vision forautomatically pressing a heel upon a shoe, for securing the heel to theshoe and for automatically pressing a top lift upon the attached heel.

It is an important object of the invention to provide a machine of thisclass adapted to secure a heel and a top lift to a shoe while mountedupon a last.

Where shoes are heeled on wooden lasts, there is considerable liabilityof the pressure to which the last is subjected in this operation beingso great as to fracture the last.

To avoid this occurrence, the present invention contemplates theprovision of a heel attaching machine in which the pressure applied tothe last in the heel attaching or top lift attaching operations shallnever exceed a certain maximum. I11 attaching a heel or a top lift, theparts pressed upon a last are subject to variations both in thicknessand density. Moreover, there is some liability of variation in theheight of the lastitself. In heel attaching machines now in use,variations such as those mentioned occasion variations in the pressureto which the last is subjected. In the use of such prior machines, anincrease in thickness or in density of the parts is, at times,suflicient to occasion such an excessive pressure as to cause the lastto be broken.

To avoid this defect, an important feature of the present inventionconsists in the provision of mechanism for pressing a heel upon a shoecarried by a last with a pressure which shall not exceed a predeterminedmaximum regardless of the thickness or the density of the parts.

While the invention contemplates the use of any suitable mechanismadapted to insure that the maximum pressure to which the last may besubjected shall be determined independently of the thickness or thedensity of the parts, it ispreferred that the arrangement be such thatsaid maximum pressure applied through said parts to the shoe support maybe of a predetermined measured amount. In the present machine saidpressure is measured by the tension of an elastic member, such as aspring, the pressure applied being limited to the amount required toproduce a predetermined amount of tension in said member.

In attaching top lifts to attached heels by means of machines now inuse, there is even greater liability of subjecting the last to anexcessive pressure than is present in the operation of attaching theheels. It will be seen that after a heel is attached, the heel and shoebeing firmly secured together constitute a firm support to resist thepressure applied to the top lift and there is less capacity for yieldingthan is present in the operation of securing the heel.

A further important feature of the invention accordingly consists in theprovision of mechanism for pressing a top lift upon a heel with apressure which shall not exceed a predetermined maximum regardless ofthe thickness or the density of the lift. As in the operation ofattaching a heel, the maximum pressure which may be applied to the toplift is preferably of a measured amount.

The condition of the parts in attaching a heel is quite different fromthat in attaching a top lift and it may be desirable, for this reason,to employ a greater pressure in attaching a heel than in securing a toplift to the attached heel. The arrangement is preferably such,therefore, that the limits of pressures in the heel attaching operationand the top lift attaching operation, respectively, may be different inamount.

In the machine herein shown, there is provided a shoe support and a nailblock arthe operation of the machine the extent of preliminary movementof the shoe support varies in accordance with 'the thiclmess -of theparts lying between the nail block and the shoe support, and the face ofthe heel at the time when the work support is arrested and compressioncommences is in a predetermined plane regardless of its height. Thepressure applied'to the heel is measured bythe tension produced in theelastic mem-.

her, and this tension can never exceed that produced by a fixedamount-of movement of the actuating mechanismfor the nail block.

The machine in which the present invention is herein shown as embodiedcomprises among its parts a shoe-holder and a nailblock, together withmeans for changing the relative positions of said parts whereby the heelsustained by the nail-block is brought into contact with the sole of theshoe.

Thereafter during the further operation ofthe machine one of said parts,viz :-the shoe-holder in the instance herein shown, occupies a fixedposition while the other, viz :the -nail-block, rises and thedriverhead. and drivers with which the machine is provided also rise,moving at a more rapid rate than the nail-block, whereby they act on thenails in the block to drive them therefrom into the heel'and sole. Thenail-block moving with the driver-head and drivers, although at a slowerspeed, may be made to compress the heel to any desired predeterminedextent.

In'the embodiment of the invention herein shown the nail-block islocated below the shoe-holder and is raised to bring the heel supportedthereon into contact with the sole of the shoe, the shoe-holder beingfree to rise with the nail-block during the first part of the operationof the machine after the heel has contacted with the shoe. Thereafterthe shoe-holder is locked against further movement and the heel iscompressed by the continued upward movement of the nail-block, while thenails are being driven. The degree of compression imparted to the heelis varied by arresting the shoe-holder sooner or later with relation tothe stroke of the nail-block.

'F or applying the top-lift to the heel the operation of the machine isthe same as for attaching the heel to the shoe, but as there are'nonails supplied to the nail-block the operation of the drivers isineffective. While applying the top-lift the pressure exerted upon thestock will preferably differ from the pressure exerted when attachingthe heel to the shoe. Itis to be understood, however, that thisinvention is'not limited to a machine in which the shoeeholder isstopped to insure a predetermined limit of pressure but the invention isbroad enough to cover a machine in which the heel is compressed by amovement of the shoe-holder toward a nail-block which is held stationaryor approximately stationary, and consequently by the term change in therelative positions of the shoe-holder and nail-block as used herein itis intended to cover broadly a relative movement between said shoeholderand nail-block.

I have made provision, by arresting the shoe-holder sooner or later wlthrelation to the rise of the nail-block, for compressing the stock of theheel'to any predetermined degree while attaching the heel and also forcompressing the heel and'top-lift to any predetermined degree whileattaching a top-lift to the heel, and these pressures may and preferablywill be difierent, the pressure applied during the heel-attachingoperation being usually in excess of the pressure applied during thetop-lift attaching opera tion. In the form in which I have herein chosento illustrate my invention the drivers are carried by a driver-headconnected with a die-bed spindle of usual'construction and actuated inusual manner. The nail-block is represented as carried by a nail-blockhead having guide rods extending through the driver-head and throughsprings contained in the spring sustainers supported by saiddriver-head, the springs sustaining the nailblock head in a yieldingmanner. The spring sustainers move with the driver-head so that as thedie-bed spindle is started, preparatory to driving nails, the nail-blockon which the heel rests carries the heel against the sole of the shoe inthe shoeholder and thereafter the shoe-holder moves wit-h thedriver-head and nail-block for a short period and then its movement isarrested. After the shoe-holder is arrested the nail-block and driverhead continue to move in the same direction, but the nailblocksustaining springs yield to permit the driver-head to move farther thanthe nailblock for driving the nails to attach the heel at the same timethat it is being compressed.

The machine herein described has a nailblock and a foot-plate to providefor any required nailing of any sized heel, and to provide for a changeof nailing and so utilize more or less of the holes in the nailblock andfoot-plate, I have provided a device-called a mug, which has a series ofholes arranged in accordance with the particular nailingdesired, theholes in the mug when in working position corresponding in location withsome but not with all of the holes in the'foot-plate, and by a change ofmug, and a change of loader-plate which is fitted to the usualloader-block in a loadercarrier, any desired nailing may be readilyprovided for without dismembering the machine. The loader-carrier hereinto be described, which takes the nails from the mug and deposits them inthe usual nail-block, is

supplied with nails only when said carrier with its loader-plate is inits nail-receiving position underneath the mug, and to provide that thenails shall be discharged automatically from usual nail-assortingmechanism such for instance as shown in United States Patent No.694,656, dated March 4, 1902, I have provided herein a rod mounted inbearings and having at its lower end a device which as the loadencarrierhaving received nails is moved to give up nails to the nailblock, meetsand turns said device but does not lift the rod. hen, however, saidloader-carrier is being returned to nail-receiving position, it meetssaid device and lifts the rod, thus starting automatically into movementthe nail-assorting mechanism that it may deliver a series of nails inusual manner to the foot-plate and mug. The band-clamp to embrace theheel end of the shoe is also of novel construction, as will behereinafter described.

F igure 1 in front elevation represents a sufficient port-ion of a heelnailing machine of usual construction with my improvements added toenable my invention to be understood, the chief part of the shoe-holderbe ing omitted by breaking off the major part thereof; Fig. 1 shows thenail block carrier and nail block; Fig. 2 is a section below the line00, Fig. 1; Fig. 2 a sectional detail in the dotted line :11, Fig. 2;Fig. 3 is an enlarged detail showing among other things the mug, part ofthe framework, the shoe clamp, the loader, and the foot-plate havingconnected with it nail conducting tubes; Fig. 3 is a detail to bedescribed; Fig. 4 is a plan view of the parts shown in Fig. 8, thefoot-plate being partly broken out; Fig. 5 shows a bushing detached;Fig. 6 is a side elevation of the machine shown in Fig. l, chiefly toshow the means for locking the shoe holder to insure any predeterminedextent of pressure, the shoe clamp, mug, loader, loader-carrier andother parts being omitted; Fig. 7 is a detail showing the clutch-box andclutch therein in section, together with the lower end of the legconnected with the walking beam; Fig. 8 is a detail looking into theopen end of the clutch box; Fig. 9 is a detail looking at the clutchboxfrom the right of Fig. 6; Fig. 9 is a perspective view'with parts brokenaway showing details of construction of the clutch box; Fig. 10 is aplan View of the clutchbox and itscontained parts below the dotted linem, the screw being omitted, said view also showing means for moving thepres sure-lever; Fig. 11 is a top view of the pressure-lever; Fig. 12shows two views of the pressure-plate employed in the clutch; Figs. 13and 13 show each two views of the washers or plates employed in theclutch; Fig. 14 is a side elevation showing the actuators forcontrolling the extent of pressure upon the heel and upon the topdift;Fig. 15 is a detail showing the hub carrying the actuator in section andmounted on the main shaft, together with part of a cam and a lockingdevice cont-rolled thereby; and Fig. 16 is a side elevation of the camwhich controls the locking device.

A indicates the framework, and B a die bed spindle guided therein andderiving its movement from a toggle C, D, moved by a strap or link Aactuated by a crank on a shaft A provided with a balance-wheel B,adapted to run loose thereon except when clutched to said shaft by theoperator putting his foot upon a starting treadle of usual construction,but not shown, the movement of the treadle eifecting the clutching ofthe balance-wheel to the shaft, the removal of the foot from the treadleenabling the balance wheel to be freed and the rotation of the shaft tobe stopped. E rep resents a spindle having at its lower end a guideway Fto receive a suitable carriage G having connected therewith a jack orshoeholder H, only partially shown in Fig. 1, it being of usual shape tosustain a last C, shown only in Fig. 6, which may be the original lastover which the shoe was formed, and may consist of wood or any otherusual material. B is a walkingbeam pivoted at B on the top of theframework A and joined at B with the upper part of the spindle E. B is ahand-wheel for adjusting the length of the spindle E to adapt it to theheight of heel being attached, and J is a plate for supporting aheelclasp, said plate being adjustable horizontally to position theclasp for holding the shoe in proper position to receive the nailsdriven through the heel into the shoe sole. These parts are and may beall as common in heel-nailing machines now in use.

The machine herein illustrated has a projecting arm L see Fig. 3 inwhich is clamped a rod M extended upwardly through a second arm N. Themachine has also a rod 0 clamped in a bearing P. The rod 0 is surroundedloosely by one end of a loader-car'- rier R having at its underside agate S which is locked in its operative position by means of a stud Tentering a hole in a lug S of the gate which is preferably made to yieldsomewhat vertically. The gate has coacting with it a spring U, see Fig.4, which serves to open the gate on the arrival see Fig. 8, which areentered low it and enter the depressions l of the loader-carrier inposition to discharge nails from the usual loader-plate of theloader-carrier into the holes in :the nailblock a*, as provided for inUnited States Letters Patent No. 694656, so need not be described morefully herein, that patent also showing the starting treadle which isomitted from the accompanying drawing.

I will now particularly describe the invention to be herein claimed.

The lower end of the leg H connected to the walking-beam at B is splitand receives a nut H which is clamped therein by a suitable clamp-screwH The leg H has a hole H in which may enter the upper end of a screw Hof very quick pitch, the head H of said screw, see Fig. 7 restingagainst the bottom of a clutch box 'H secured to the framework A byscrews H The head H of the screw is internally screw-threaded to receivethe threaded end of a bolt H which passes loosely through the bottom ofthe clutch-box. The bolt H prevents any longitudinal movement of thescrew ll-I yet permits the latter toturn as it is revolved in theclutch-box, as will be described. The head H of the screw H preferablyrectangular in cross section but which may be of any other shape exceptcircular, is surrounded by washers or plates D, see Figs. 7 and 13, thecentral openings of which fit the contour of the head of the screw so asto rotate therewith.

The'clutch-box has a series of notches D, by ears D forming part ofnon-rotative washers D see Fig. 13, the washers D and D beinginterspersed or arranged alternately in a stack, as represented in Fig.7 The stack .of washers D, D is surmounted by a pressure-plate D seeFig. 12, provided at its upper side with an angular groove D to receiveballs D and having ears D to enter the notches D. On top of thepressureplate D in the clutch-box, is a pressure-lever 3 having arms 2,3, and lower side with an annular groove to fit over balls D The upperside of the lever has pits 4 in which are located the lower ends of-clamping-struts 5, made in the form of pins as shown in Figs. 6 and 10.The upper ends of the struts 5 abut against adjustable screws 6, seeFig. 10, which are carried in ears 7 projecting from a cap-block 8conlnected with a clutch-box by screws 10. The

cap-block which is shown in top view, in Fig. 10, and in section in Fig.7, has its inner edge notched, as at 82, so that the lower ends of theclamping-struts 5 may pass bein the clamping lever D The shaft A seeFig. 15, is surrounded near the end opposite to that which carries thefly-wheel B with a loose hub 13 composed of two similar plates heldtogether by screws provided at its 14, see Fig. 14, the inner side ofsaid plates having dove-tailed grooves which may be of the shape shownin Fig. 15. The said grooves receive the dove-tailed inner ends of twoactuators 15'and 16 which are adjustable therein in a directioncircumferential of the shaft A to occupy any desired position in thecircumference of the shaft so as to meet, at any certain point in therotation of the shaft, a lever which has connection with thepressure'lever, .bove described, for controlling the clutch composed ofthe plates D, D By properly adjusting the actuators 15 and 16 they maybe made to act on said lever sooner or later and cause any desiredpressure to be applied to the heel while it is being attached to theshoe and then to the heel and top-lift while the top-lift is beingattached to the heel, and this pressure may be exerted for a longer orshorter time during the period of the rotation of the shaft A as theconditions of the stock may require.

A locking device 17 for connecting the hub 13 to the shaft A is formedas an elbow lever pivoted at 18 to the shaft and having a horizontal armmovable into and out of a groove 19 in the shaft, see Fig. 15. The freeend of said horizontal arm is acted upon by a spring 20 which holds thesaid arm normally in position to engage one or the other of two notches21 and 22 formed in the inner face of the hub 13. The hub 13 isrestrained from movement toward the adjacent end of the shaft by acollar 23 held in position on the shaft by a screw 2 f. An arm 26 issecured at its lower end to the framework by a bolt 25, see Fig. 6, andhas on the inner side at its upper end a face-cam 27, see Fig. 16. Thecam 27 is secured in operative relation to the shaft A by a screw 28which passes loosely through a hole'28 in the cam and enters a threadedhole in the end of the shaft. The outer end of the locking device 17bears against the face-cam 27 which is so shaped as to turn said lockingdevice during the rotation of the shaft, moving its inner end out of thenotch in the hub 13,thereby releasing said hub and leaving it at restduring a portion of the revolution of the shaft. In the last portion ofthe rotation of the shaft the locking device 17 will be permitted torengage the hub 13 at the other notch and cause the hub and theactuators 15 and 16 to be moved with the shaft during the completion ofthat rotation of the shaft. In this way two rotations of the shaft makeone full rotation of the hub 13 and the actuators 15 and 16, onerotation of the shaft taking place while the heel is being attached andthe other while thetoplift isbeing attached.

The clutch box H has depending from it an arm 29 having a hub or bearing30 at its lower end which receives a stud 31. On the stud is mounted alever 32 having a short arm 33 extended above the end 3 of thepressure-lever D, the lower end of said lever 32 having a toe 34Lprovided with a shoulder 35. The lever 32, which I may hereinafterdesignate as a connection, is acted upon by a spring 36 which tends tomove the upper end 33 thereof toward the right in Fig. 6. Thepressure-lever D is acted upon by a spring 37 which normally holds thepressure-lever turned in the direction opposite to the arrow in Fig. 10,thereby maintaining the struts 5 in an upright posit-ion and keeping theclutch plates D and D pressed together so that the clutch is closed. Thespring 37 will be herein referred to as the clutch controlling means Theactuator 16, before described, when brought into contact with theoanrshaped toe 34 of the connection 32 moves the upper end of saidconnection to the left, viewing Fig. 6, and causes the pressure-lever tobe turned in opposition to the tension of the spring 37 in the directionof the arrow in Fig. 10 until it comes against a stop 39. This movementof the pressure-lever turns the struts 5 into an inclined position,therey releasing the pressure on the series of plates I) with relationto the series o plates D carried by the screw H and leaving the screwfree to turn in the clutch-box. The parts of the machine are so timedthat the pressure of the clutch-plate remains released and the screw isfree to turn during the first part of the rise of the nail-block headand the driver-head hereinafter described. This allows the shoe-holderto rise reely after the heel ha been brought into contact with the shoe,the leg H at such time moving downwardly and rotating the screw H. Whenthe actuator 16 passes the shoulder 35 of the cam-shaped too 34 in therising movement of the nailblock carrier, the spring 36 immediatelymoves the connection 32 and enables the spring 37 to move the pressurelever in a direction opposite the arrow thereon, Fig. 10, thus movingthe struts 5 into upright position again, and forcing the clutch platesD and D so firmly together that the further rotation of the screw H isinstantly checked, and conse quently the further descent of the leg H isarrested, thus preventing any further movement of the jack or shoeholder H, and thereafter as the nail block head completes its ascent,the heel is compressed to the desired extent, or has given to it apressure the amount of which is predetermined by the position of theactuator 16 in the hub 13. The actuator 16 may be adjusted in the hub sothat it will retire from the toe 34 of the connection at any point inthe rotation of the shaft A and by the adjustment of said actuator, theclutch in the clutch-box may be made effective to stop further rotationof the screw H and further movement of the jack or shoe-holder at anydesired time during the upward movement of the nailblock head. Theactuator 15 contacts with the connection 32 only when the die-bedspindle is rising to spank a top-lift onto the nails uniting the heel tothe shoe, and by adjusting the actuator 15 in the hub 13, it will beobvious that it may be made to act and close the clutch, restraining thescrew H from rotation at any desired point in the second rise of the diebed spindle, and cause the top-lift to be compressed either equally withthe compression of the heel, or more or less as the stock used in thetop-lift requires. In this way it will be readily seen that by theadjustment of the actuators 16, 15, I may provide for any desired extentof pressure on the heel and on 'the toplift.

United States Patent No. 510,012, dated December 5, 1893, shows a screwconnected with a leg attached to the rear end of the walking beam formoving the jack or shoeholder, and said screw .is controlled by aclutch, but in that machine there is no provision whatever for varyingthe pressure put upon the heel with relation to that put uponthetop-lift or vice-versa.

While I prefer to use a clutch composed of plates or washersinterspersed as represented, yet this invention is not limited to theexact construction shown of the clutch, or of the actuators, or of theconnection between the actuators and the clutch.

I believe that I am the first to employ in a machine of this character,mechanism for imparting during the toplift attaching operation, a degreeof pressure different from that imparted in the heel-attachingoperation, or mechanism for varying the amount of pressure imparted inthe top-lift attaching operation irrespective of the amount of pressureimparted in the heelattaohing operation, and I desire to claim thisinvention broadly in whatever forms it may be embodied The rod or post Msee Fig. 3 and also Fig. 4 has clamped upon it by a screw 6 the splithub o of a foot-plate (Z having a number of nail-holes 0 arrangedtherein to provide for any nailing required in attaching heels to bootsand shoes. The foot-plate, as represented, is provided with a guideway,herein shown as a groove made longitudinally in its underside, and thisguideway receives the top-plate f of what is here-' in designated as themug, it consisting of said topplate, a bottom-plate a handle 72,, andpreferably an upright wall The bottom-plate g has holes arrangedcorrespondingly withthe holes in the top plate f of the mug, and theseholes are united by suitable tubes preferably of spring-coils m, woundopen to exhibit the nails. The holes in the top-plate of the mug may bemade to correspond with the nailing desired, and e when the mug isinserted in the foot-plate plate to will correspond with the holes inthe bottom of the mug. The top-plate of the mug has an inclined face a,see Figs.

3 and 4, and back of said inclined face is a hole 0, and'the foot plateis provided with a hole'in which is entered a pin 9 acted upon by aspring q, and arranged to enter the hole When the 0 for securing the mugin place. mug is inserted in the foot-plate, the inclined face n meetsthe pin, lifts it, and the spring g immediately causes the pin to enterthe hole 0 as the latter comes-under the pin, and the mug is locked inits proper posit-ion.

The machine described has a rod 9" arranged to be actuated at times forsetting a nail-assorting and delivering mechanism into operation. Therod is provided at its lower end with a device 8, shown as a cam pivotedthereon at t, and, see Fig; 3*, said device is so constructed that aprojection w rising from the loader carrier B may meet the device 8 asthe carrier is moved in the direction of the arrow on it in Fig. 4, andturn the device without lifting the rod 1. By this arrangement when theloader-carrier is being moved to carry nails previously supplied to itandput them in position to be discharged, into the holes in thenail-block, the rod 1* will not be operated, and consequently thenail-assorting mechanism will not deliver nails during such movement ofthe loader carrier. \Vhen, however, the loader carrier is moved in theopposite direction, that is from its nail discharging into its nailreceiving position, the projection to meets the device 8 just as theloader carrier comes into its nail-receiving position, and lifts the rod1", setti-ng in motion the nail assorting mechanism to deliver oneseries of nails to the tubes at extending from said nail assertingmechanism to the top-plate. United States Letters Patent No. 707,138,granted on the 19th day of August, 1902, shows a rod like the rod-'1"together with suitable means actuated by said rod to start intooperation the nail-assort-ing mechanism.

-The die bed spindle B supports a drivercarrying head 5 having asuit-able recess as 0 in. which is placed a driver-plate cl, sustainingthe lower ends of a series of drive-rs e.

The driver-carrying head has detachable pillow-blocks f which areconnected with said head by screws 9. When these pillowblocks areremoved the driver-carrying head I) has applied to it the upper end ofspringsustainers h, represented in Fig. 1 as loops having at their upperends circular portions head 6 or bearings terminated by flanges 2", j,so that when said circular portions are inserted in the recesses at theends of the head I) and the pillow-blocks are put in position, saidspring-sustainers are connected with the to move therewith as thedie-bed The spring-sustainers also constitute guides for rods mconnected with the nail block head a. The rods m are provided withshoulders 0 below which the rods are reduced in diameter as at p. Thelower ends of the rods are represented as passing through holes in thelower ends of the spring-sustainers, and receiving upon them nuts q. Thenuts 9 actas stops to limit the upward movement of the rods anddetermine the position that the nail-block head shall occupy above orwith relation to the drivercarrying head under the action of the springsT which rest on said sustainers. The springs surround the reducedportions 7) of the rods and act at their upper ends against theshoulders 0 of the said rods.

By the letter A, Fig. 1, I intend to indicate any usual device to hold aheel and a top-lift, said device moving vertically with the nail-blockhead and swinging to and fro to enable the heel held by the device to beput into position to have nails driven into it to attach it to the shoe,and then to present to the face of the nailed heel a top-lift, onedevice for this purpose being fully described in said Letters Patent ofthe United States, No. 694,656, granted March 4th, 1902. Thedriver-plate d rests on a sustaining plate 0 having a shoulder 0 whichcontacts with the front end of the driver-plate to keep itin position inthe driver-carrying head. The rear end of the driver-plate straddles apin 0 extended upwardly throughan ear b of the driver-head. The pinholds the plate (Z in place and is inserted through the ear after theplatehas been put in place. The sustaining plate is inserted in thedriver-carrying head in the direction of the arrow 2, and is locked inits operative position by a pin 0 inserted through said plate and a holein an ear, shown by full lines Fig. 2 as extended from said head.

By withdrawing the sustaining-plate, the

spindle is operated.

driver-plate and its attached drivers may from, a yoke 0Z hereinrepresented as substantially semicircular in shape and provided at itsends with two abut-ments. The yoke (Z is provided near its ends withpivot pins 7L upon which boxes which receive threaded rods 2' providedat the outer ends of said boxes with nuts k The rods 2' are jointed tothe sides of a yielding sheet-metal clamp a adapted to embrace the heelend'of the shoe, then held on the last forming part of the shoeholder,and by adjusting the nuts 74 the clamp may be adapted to fit shoes andlasts which differ in width at the heel end thereof. The clamp a hasextended backwardly from it a guide 5 Said guide enters a hole in athreaded bushing c adjustable in the yoke (Z an adjusting nut 72. beingapplied to said bushing so that the bushing, having at one end ascrew-driver slot 71 may be turned to place the end of the bushing atjust exactly the proper position to stop the inward movement of theclamp a When the heel portion of the shoe has been placed within theclamp a and the latter forced backwardly to meet the bushing in itsadjusted position, the operator will turn the loader-carrier from itsnail receiving into its nail-discharging position, to supply thenail-block with nails, and return the nail-carrier into itsnail-receiving position. When the carrier is moved into nail-receivingposition it will come in contact with the device 3 and thereby lift therod 1" to start the nail-assorting mechanism and supply the loader-platewith nails, ready for the next nailing.

In. the operation of the machine shown, a heel having been placed in theusual heel holder mounted upon the nail block head, and a shoe havingbeen placed upon the shoe holder H, the machine is started by actuatinga suitable starting treadle, The movement of the main shaft A raises thespindle B and the nail block head a sustained by said spindle. In thefirst por tion of the upward movement of the spindle, the nail blockhead and driver-carrying head move together and the heel and the shoeare moved vertically, the screw H being unclutched at this time andconsequently permitting upward movement of the shoe support I-I. It willbe observed that the extent of upward movement imparted to the shoesupport will vary in accordance with the thickness of the parts lyingbetween said shoe support and the face of the nail block. At apredetermined point in the movement of the main shaft A said point beingdependent upon the position of the actuator 16, the lever 32 is moved bythe spring 36 to cause the screw H to be held from turning movementwhereby the upward movement of the shoe support H is arrested. In thefurther are mounted swivel movement of the main shaft, the spindle B anddriver-carrying head Z) continue to rise while the movement of the nailblock head is resisted by the shoe and heel carried upon the shoesupport. The vertical movement of the spindle has a predetermined limit,and the tension produced in the spring 1" is that caused by themovelnent of the spindle to this limit from the point where'upwardmovement of the shoe support is arrested. At the point in the operationof the machine at which the shoe support is held from further movementitwill be understood the heel is in contact with the heel seat of theshoe. It will be seen, therefore, that the maximum pressure which can beimparted to the heel, and which is determined by the tension of thesprings 1", at the upper limit of movement of the spindle, isindependent of the thickness and density of the stock held between theshoe support and the nail block. It

will be understood that in the upward movement of the nail block headand the driver-carrying head, while the heel is held under pressure uponthe heel seat, the nails are driven by the drivers through the heel intothe heel seat, the nail-driving operation being completed at the end ofthe first half revolution of the main shaft. In the latter half of therevolution of this shaft, the parts are returned to their originalposition, the screw H being released. A top lift having been interposedbetween the attached heel and the nail block, a second revolution of themain shaft is effected for the purpose of attaching said lift. Theoperation of the parts in attaching a top lift is similar to that abovedescribed in connection with the heel attaching operation. The pressureimparted to the top lift is represented by the amount of compression ofthe springs r and this compression is limited independently of thethickness or density of the lift. At the close of the operation ofattaching the top lift, when the parts of the machine are in theposition shown in Fig. 6, the screw H is unclutched so that the spindleE is free to be given vertical movement. It will be seen that in theupward movement of the nail block in pressing a heel or a top, lift uponthe shoe, the pressure imparted by said block increases progressively inits movement, through the gradual compression of the springs r. Themaximum pressure applied to a heel or top lift thus occurs at the end ofthe upward stroke of the die bed spindle B.

Having described my invention, what I claim as new and desire to secureby Letters Patent is Z 1. In a machine of the class described, mechanismfor attaching a heel and for attaching a top-lift, said mechanism insaid attaching operations imparting pressure to' the heel and to thetop-lift, and means for regulating the amount of pressure imparted inthe top-lift attaching operation irrespective of the amount of pressureimparted in the heel-attaching operation.

2. A heel attaching machine, having in combination, a shoe holder, anail block,

combination, a movable shoe holder, a movable nail block, means toimpart movement to said parts in the same direction, a screw connectedwith the shoe holder and a clutch cooperating with the screw to controlthe movement of said shoe holder and a plurality of devices foractuating said clutch arranged to permit the movements of the shoeholder during the operations of attaching a heel and a top lift to beindependently controlled.

4. In a machine of the class described, a shoe holder, a nail block,means to drive nails from the nail block in attaching aheel to the soleof a shoe, means to change the relative positions of said shoe holderand nail block to clamp and release the stock while attaching both theheel to the shoe and the top lift to the heel, said means including aclutch, and automatic means co-acting therewith to arrest the movementof one of said parts at predetermined periods during successive clampingoperations, thereby to effect a compression of the stock while attachingthe heel, which is different in degree from the compression effectedwhile attaching the top lift.

5. A machine for attaching heels, having in combination, means forsupporting a shoe, means for pressing a heel upon the shoe and forthereafter pressing a top lift upon the attached heel arranged to limitthe respective pressures employed in said operations independently ofthe thickness of the heel or top lift and constructed to permit'ditferent limits of pressure to be provided for heel and top liftrespectively. p

6. In a machine of the class described, a movable shoe holder adapted tosustain a last upon which is mounted the shoe tobe heeled, means actingfirst to force the heel against the shoe while driving nailstherethrough to attach the heel to the sole of the shoe, and then toforce the top lift against 7 the end of the attached heel, and meansoperating in succession to arrest the movement ofthe shoe holder atdifierent periods during the heel-attaching and top liftattachingoperations, thereby to exert different amounts of predeterminedpressures, while attaching first the heel to the shoe and then the toplift to the heel.

7. In a machine of the class described, means for driving nails toattach a heel to a sole and spank a top lift to the heel, a shoe-holder,a nail block, a plurality of adjustable actuators and means governedthereby for controlling the relative position of said shoe holder andnail block when attaching a heel to the sole of a shoe and when securinga. top lift to a heel whereby a heel may be compressed to one degree,anda heel and top lift to another degree.

8. In a heeling machine, a movable holder for the shoe to which a heelis to be attached,

a nail block, and drivers, means for moving said parts in one directionto insure the forcing of the heel against the sole of the shoe, andthereafter the forcing of a top lift against the heel, two actuators,and means controlled'by one actuator to-lock and restrain at a.predetermined time the movement of the shoe holder while attaching aheel to insure a predetermined compression of the heel, said means beingcont-rolledsby the other actuator to effecta different amount ofcompression of the top lift.

9. In a nailing machine, nail drivers, a nail block, means to move them,a shoe holder movable by the pressure against it of a heel sustained bythe nail block, a rotatable shaft, means for arresting the movement ofthe shoe holder, a plurality of actuators carried by said shaft, meansunder the control of said actuatorsto render inoperative said arrestingmeans, said actuators being adjustable to vary the time during theheelattaching operation that said arrest-ing means shall be operated toarrest the shoe holder, both when attaching a heel andthereafter whenattaching a top liftto the heel.

10. In a heel nailing machine, nail drivers, a nail block, means to movethe drivers to attach a heel to the sole of a shoe, a shoe holdermovable by the pressure against it through a heel, a rotatable shaft,meansfor arresting the movement of the shoe holder, an adjustableactuator carried by said shaft, means under the control of said actuatorto render said arresting means inoperative, the adjustment of saidactuator controlling the time during the heel attaching operation thatthe shoe holder shall be arrested to provide for any predeterminedcompression of'the heel according to the requirement of the stock.

11. In a heel nailing machine, nail drivers, a nail block, means to movethe drivers to attach a heel to the sole of a shoe, a shoe holdermovable by the pressure against it through a heel, a rotatable shaft,means for arresting the movement of the shoe holder, a plurality ofindependently adjustable actuators carried by said shaft, means underthe control of said actuators to render said arresting means inoperativeat intervals in successive rotations of said shaft to vary the period oftime in the operations of attaching a heel, and a top lift to theattached heel during which the shoe holder shall be arrested to thusprovide for a predetermined compression first of the heel and then ofthe heel and top lift.

12. In a heel nailing machine, a nail block, a shoe holder, a rotatableshaft controlling the movement of said parts to force the heel againstthe sole during one rotation and force the top lift against the heelduring another rotation, two actuators carried by said shaft, and meanscontrolled by said actuatorsin succession to effect the compression ofthe heel and then of the heel and top lift each to a predetermined butdifierent degree.

13. In a heel nailing machine, a nail block, a shoe holder, a rotatableshaft controlling the movement of said parts to force the heel againstthe sole, and then the top lift against the heel, two circularlyadjustable successively operating actuators carried by said shaft, andmeans operated by said actuators to vary, according to their adjustmentabout the shaft, and effect the predetermined pressure of the heel andthen of the heel and top lift during successive rotations of said shaft.

14. In a heel nailing machine, a nail block, a shoe holder, a rotatableshaft controlling the movement of said parts to force the heel againstthe sole, and to thereafter force a top lift against said heel, a collarsurrounding said shaft loosely and provided with two achiators, alocking device to lock said collar to said shaft that it may move saidcollar, and means to release said locking device that the collar mayremain at rest on the running shaft until again engaged by the lockingdevice, the locking and releasing of the locking device enabling thecollar and its actuators to be turned with relation to said shaft, saidshaft rotating twice while the collars and actuators rotate once, andmeans controlled by said actuators for governing the respective amountof pressure applied to a heel and to a heel and top lift.

15. In a heel attaching machine, a rot-atable shaft, a die-bed spindleand a nail block deriving movement therefrom, a mov able shoe holder, ahub locked to said shaft, an actuator adjustable in said hub about thelongitudinal aXis of said shaft, and means intermediate said actuatorand shoe holder and under the control of said actuator to arrest themovement of the shoeholder during the upward movement of the nail blockto thereby vary the degree of compression of the heel according to therequirements of the stock.

16. The combination with a movable shoe holder, and a screw connectedtherewith to revolve when the shoe holder is moved, said screw carryinga series of plates, of a series of stationary plates interspersedbetween the plates connected with said screw, and means to force saidplates together to restrain the rotation of the screw and arrest themovement of the shoe holder.

17. The combination with a movable shoe holder, and a co-act-ingrotatable screw, of a clutch composed of a series of plates connectedwith said screw, and a series of stationary plates interspersed betweenthe plates connected with said screw, a pressure-plate, apressure-lever, means to move said lever, and devices between saidpressure-plate and pressure-lever to cause the pressure-plate to forcethe plates of the clutch together and restrain the rotation of saidscrew and arrest further movement of the shoe holder.

18. The combination with a movable shoe holder, of a connected leghaving a threaded nut, a screw entering said nut loosely and having a.head other than round, a clutchbox in which said screw is entered, saidscrew being rotatable in said clutch-box by pressure of stock againstthe shoe holder, a series of stationary plates in said clut-clrbox, aseries of interspersed plates connected and to rotate with said screw,and means to force said plates together to lock and restrain rotation ofsaid screw and consequently further movement of the shoe holder.

19. In a nailing machine, a driver-carrying head, a set of drivers,spring sustainers depending from said head, a nail block head, a nailblock, rods extending from said nail block head and guided by saiddriver-carrying head, springs surrounding and supporting said rods andsustained by said spring sustainers, and means'to move said drivercarrying head positively in attaching a heel to a sole, the nail blockhead deriving a yielding movement from said springs whereby the nailblock mounted on the nail block head is adapted to compress and hold'theheel against the sole while the drivers act to drive nails contained inthe nail block into the heel.

20. In a nailing machine, a die-bed spindle, means to move the same, adriver-carrying head on said spindle having detachable portions, adriver plate and drivers, spring sustainers having collars to enter andbe held in the bearings of said head, springs supported at one end bysaid sustainers, a nail block head to sustain a nail block, shoulderedguide rods connected with said nail block head and extended throughsaidcollars, and springs, and means cooperating with said rods to limit thedistance normally occupied by the nail block head from thec'lriver-carrying head, said springs supporting the nail block headyieldingly with relation to the driver-carrying head.

21. In a nailing machine, a foot-plate having a series of nail holes,and a guideway; combined with a mug having its nail holes arranged tocorrespond with some but not all the holes'of said plate, and shaped toengage said guideway.

22. In a nailing machine, a foot-plate having a series of nail holes,and a guideway, combined with a mug having its nail holes arranged tocorrespond with some but not all the holes of said plate, and shaped toengage said guideway, and locking means to lock said mug in itsoperative position.

23. In a nailing machine, a loader, a loader carrier, a slide rodoperable to start the delivery of nails to the .loader, bearings forsustaining said rod and means carried by said loader carrier forreciprocating said slide rod as the loader carrier arrives innailreceiving position.

24;; In a nailing machine, a driver-carrying head, combined withdetachable spring sustainers seated and retained in position at theopposite ends of said head.

25. In a nailing machine, a band clalnp holder, provided with anadjustable stop, and a band clamp, the inner position of which isdetermined by the posit-ion of said stop in said holder.

26. In'a machine for attaching heels to soles, and top lifts to heels bysuccessive operations, means for impart-ing a different degree ofpressure to the stock while attaching a heel to the sole of a shoe, thanto the heel and top lift while attaching a top lift to a heel, saidmeans when acting to compress the heel and top lift: exerting the samedegree of pressure on the heel and top lift during successive operationsof attaching top lifts to heels whatever the variation in thickness ofthe top lifts.

27. In a machine of the class described, a band clamp having a connectedguide, a band clamp holder having an adjustable stop entered by saidguide, the stop determining the position of the back or central portionof the band clamp when attaching a heel.

28. In a machine of the class described the combination with mechanismfor attaching a heel and for attaching a top lift, of means forcontrolling said mechanism constructed to limit the pressure imparted inthe heel attaching and the top lift attaching operations to differentamounts and arranged for automatically securing the same limit ofpressure for successive heels of varying thickness. 7

29. In a machine of the class described, the combination with mechanismfor attaching a heel and for attaching a top lift, of means forcontrolling said mechanism constructed to permit different degrees ofpressure to be imparted in the heel attaching and the top lift attachingoperations and arranged for automatically securing the same degree ofpressure for successive top lifts of varying thickness.

30. In a machine of the class described, the combination with mechanismfor attaching a heel and for attaching a top lift, of means forcontrolling said mechanism constructed to permit different degrees ofpressure to be imparted in the heel attaching and the top lift attachingoperations and arranged for automatically securing the same degree ofpressure for successive heels of varying thickness and for automaticallysecuring the same degree of pressure for successive top lifts of varyingthickness.

31. In a machine of the class described, mechanism for attaching a heeland for attaching a top lift, said mechanism in said attachingoperations imparting pressure to the heel and the top lift, and meansfor controlling said mechanism constructed to insure a different limitof pressure in the top lift attaching operation from that in the heelattaching operation.

32. In a machine of the class described, a shoe holder, a nail block,means for changing their relative positions in attaching a heel and thena top lift, and means to regulate to any predetermined degree the limitof pressure on both the heel and the top lift while attaching the heeland then the top lift, arranged to insure that the limit of pressureduring the heel attaching operation will be different in degree from thelimit of pressure during the top lift attaching operation.

33. A heel attaching machine, having in combination, a shoe support, anail block, means for efiecting relativemovement of said devices topress a heel upon a shoe arranged to limit the pressure applied to saidparts to a measured amount determined independently of the thickness orthe density of the parts and constructed to insure the application tosaid parts of a progressively increasing pressure.

34:. A heel attaching machine, having in combination, a shoe support andmeans for pressing a top lift upon an attached heel arranged to limitthe pressure applied to the top lift independently of the thickness orthe density of the lift and constructed to apply to the lift aprogressively increasing pressure.

35. A heel attaching machine, having in combination, a shoe support andmeans for pressing a top lift upon an attached heel arranged to limitthe pressure applied to the top lift to a measured amount determinedindependently of the thickness or the density of the lift andconstruct-ed to apply to said lift a progressively increasing, pressure.

36. A heel attaching machine, having provision for acting oversubstantially the entire area of a heel in pressing it upon a shoe,comprising an abutment, an elastic member and means for producingtension in said member below a predetermined limit determinedindependently of the thickness or the density of the parts to be heldunder pressure and for transmitting to the abutment through the heel andthe shoe the pressure required to produce said tenslon.

37. A heel attaching machine, having provision for securing a top liftto an attached heel by a single operation, comprising an abutment, anelastic member and means for producing tension in said member below apredetermined limit determined independ ently of the thickness or thedensity of the parts to be held under pressure and for transmitting tothe abutment, through the top lift and the heel, the pressure requiredto produce said tension.

38. A heel attaching machine, having in combination, a shoe support anda nail block arranged for movement in the same direction, means foractuating the nail block constructed to have a fixed stroke of movement,means for arresting the shoe support at a predetermined point in saidstroke, and means for yieldingly transmitting motion from said actuatingmeans to the nail block whereby the pressure imparted by the nail blockto the shoe and shoe support is measured by the extent of compression ofsaid yielding means.

39. A heel attaching machine, having in combination, a shoe support, anail block, means for effecting relative movement of said devices topress a heel upon a shoe, a rotatable shaft, means for arresting themovement of one of said devices, an adjustable actuator carried by saidshaft, means under the control of said actuator to render said arrestingmeans inoperative, the adjustment of said actuator controlling the timethat the movement of said device is arrested to provide for anypredetermined compression of the heel according to the requirement ofthe stock.

40. A heel attaching machine, having in combination, a shoe support, anail block, and means for efiecting relative movement of said devices topress a heel upon a shoe arranged to limit the pressure applied to saidparts to a measured amount determined independently of the resistance tocompression and constructed to insure the application to said parts of aprogressively increasing pressure.

41. A heel attaching machine, having in combination, a shoe support andmeans for pressing a top lift upon an attached heel arranged to limitthe pressure applied to the top lift independently of the resistance tocompression offered by the lift and constructed to apply to the lift aprogressively lncreasing pressure.

42. A heel attaching machine, having in combination, a shoe support andmeans for pressing a top lift upon an attached heel arranged to limitthe pressure-applied to the top lift to a measured amount determinedindependently of the resistance to compression offered by the lift andconstructed to apply to said lift a progressively increasing pressure.

43. A heel attaching machine, having in combination, a shoe support, anail block, and mechanism for effecting relative movement of saiddevices to press a heel upon a shoe arranged to limit the pressureapplied to said parts to a predetermined amount and constructed toinsure the application to said parts of a progressively increasingpressure, and means for determining the extent of such pressureindependently of the resistance to compression, said means beingarranged for manual adjustment.

44. A heel attaching machine, having in combination, a shoe support, andmeans for pressing a top lift upon an attached heel arranged to limitthe pressure applied to the top lift to a predetermined amount andconstructed to apply to the lift a progressively increasing pressure,and means for determining the extent of such pressure inclependently ofthe resistance to compression, said means being arranged for manualadjustment. p i

4.5. In a heel attaching machine, a work support, a nail block, meansfor moving the nail block toward the work support to attach a heel andfor thereafter moving the nail block asecond time toward the support toattach a top lift, and means for regulating the pressure applied to thework in the top lift attaching operation independently of the pressureapplied to the work in the heel attaching operation.

56. In a heel attaching machine, a work support, a nail block, means formoving the nail block toward the work support to attach a heel, and forthereafter moving the nail block a second time toward the support toattach a top lift, and pressure regulating means adjustable to permit aless degree of pressure to be applied in the top lift attachingoperation than in the heel attaching operation.

47. In a heel attaching machine, the combination of a work support,anail block, the work support being automatically adjustable in positionin accordance with the thickness of the parts held between the worksupport and nail block, means for moving relatively the work support andnail block a uniform distance regardless of variations in thickness ofsaid parts, means for driving nails in the work, and means for adjustingthe amount of said relative movementof the work support and the nailblock to vary the pressure applied to the work.

48. In a heel attaching machine, the combination of a nail block, a worksupport constructed for self adjustment to work of vari ous thicknessesheld between the nail'block and work support, means for locking the Worksupport in adjusted position, means for moving relatively the nail blockand work support a uniform distance regardless of variations in thethickness of said work, and means for adjusting the amount of saidrelative movement to vary the pressure applied to the work;

-19. I11 a heel attaching machine, the combination of a nail block, ajack movable to an adjusted position the location of which is dependentupon the thickness of the work, lockingmechanism for holding said jackpositively in said adjusted position, toggle mechanism for moving thenail block toward the jack, and means for predeterminately varying theamount of relative movement between the jack and the nail block.

50. In a heel attaching machine, the combination with a reciprocatingnail block, of

a work support movable in the line of movement of the nail block andarranged to be moved in one direction by pressure applied theretothrough the work by the nail block and means for positively arrestingmove ment of the work support prior to the cessation of movement of thenail block whereby'a portion of the movement of said nail block iseffective in exerting increased pres sure upon the work to compress thesame, the proportion of the movement of the nail block which iseifective in exerting such increased pressure being controllable bypreliminary adjustment.

51. In a heelattaching machine, the combination with a reciprocatingnail block, of a work support movable in the line of movement of thenail block and arranged to yield through a limited distance less thanthat of movement of the nail block, in one direction, under pressureapplied to said work support through the work by the nail block, andmeans to adjust preliminarily the limit to which said work support canyield.

52. In a heel attaching machine, the combination of a movable shoesupport, a movable'nail block, means to impart movement to said parts inthe same direction, a screw connected with the shoe support and meansfor stopping said screw and holding itstationary to stop movement of theshoe support, while allowing movement of the nail 6 0 block to continue.

In a heel attaching machine, the combination of a vertically yieldableshoe support. means for holding said support, a block for supporting aheel, said block being vertically movable in alinement with the shoesupport, means f ormoving said block toward said shoe support, andmanually operatedmeans for adjustably predetermining a point at whichthe yielding of the shoe support shall cease and it shall be positivelyheld stationary.

54:. In a machine of the class described, the combination of a shoesupport, means for pressing a heel upon'a shoe carried by said supportwith a predetermined amount of pressure, and controlling meansforcausing an abrupt increase in said pressure, said controlling meansbeing capable of preliminary manual adjustment to vary the amount ofsaid increase. 7

- In testimony whereof, I have signed my name to this specification, inthe presence of two subscribing witnesses.

ALVIN D. ELLIOTT.

i \Vitnesses:

MARGARET A. DUNN, EDWARD F. ALLEN.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. G." i

